{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-64313",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-64313",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-25T08:49:44.546Z",
    "updatedAt": "2026-10-19T20:38:23.266Z",
    "importedAt": "2026-10-24T01:58:25.636Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "crypto: ecc - Fix carry overflow in vli multiplication",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ecc - Fix carry overflow in vli multiplication\n\nThe carry flag calculation fails when r01.m_high is saturated\n(0xFFFFFFFFFFFFFFFF) and addition of lower bits overflows.\n\nThe condition (r01.m_high < product.m_high) doesn't handle the case\nwhere r01.m_high == product.m_high and an additional carry exists\nfrom lower-bit overflow.\n\nWhen commit 3c4b23901a0c (\"crypto: ecdh - Add ECDH software support\")\nintroduced crypto/ecc.c, it split the muladd() function in the\nmicro-ecc library into separate mul_64_64() and add_128_128() helpers.\nIt seems the check got lost in translation.\n\nAdd proper handling for this boundary by accounting for the carry\nfrom the lower addition.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "3c4b23901a0c766879dff680cd6bdab47bcdbbd2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d11b2bb99bec1f5557c01cac42231e23745f49b8"
            },
            {
              "version": "3c4b23901a0c766879dff680cd6bdab47bcdbbd2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b709e0e768766abe29a49e1c1922a1604be602f4"
            },
            {
              "version": "3c4b23901a0c766879dff680cd6bdab47bcdbbd2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "24a54dfa06d09813b4802a374fad3d2c0e16a884"
            },
            {
              "version": "3c4b23901a0c766879dff680cd6bdab47bcdbbd2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "677450e5ef850c4d28b7956aa01104548c2a894e"
            },
            {
              "version": "3c4b23901a0c766879dff680cd6bdab47bcdbbd2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5275e0fca256d081e2e7d4ba3dd8216c6e50d44e"
            },
            {
              "version": "3c4b23901a0c766879dff680cd6bdab47bcdbbd2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "774ddddf5eb26eeca177350413e3e2bc50930ee9"
            },
            {
              "version": "3c4b23901a0c766879dff680cd6bdab47bcdbbd2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ebaae7c4251cc0cdb2602f334d4f08a3e82d271e"
            },
            {
              "version": "3c4b23901a0c766879dff680cd6bdab47bcdbbd2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "27b536a2ec8e2f85a0380c2d13c9ecbc7aaab406"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.8",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.8"
            },
            {
              "version": "5.10.261",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.212",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.178",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.145",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.96",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.39",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}